netdev - Re: [PATCH net-next 0/3] net: ethernet: ti: cpsw: Add XDP support

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Date:   Fri, 24 May 2019 12:41:45 +0300
From:   Ilias Apalodimas <ilias.apalodimas@...aro.org>
To:     Ivan Khoronzhuk <ivan.khoronzhuk@...aro.org>
Cc:     grygorii.strashko@...com, hawk@...nel.org, davem@...emloft.net,
        ast@...nel.org, linux-kernel@...r.kernel.org,
        linux-omap@...r.kernel.org, xdp-newbies@...r.kernel.org,
        netdev@...r.kernel.org, daniel@...earbox.net,
        jakub.kicinski@...ronome.com, john.fastabend@...il.com
Subject: Re: [PATCH net-next 0/3] net: ethernet: ti: cpsw: Add XDP support

Hi Ivan,

More XDP drivers, that's good!
> This patchset add XDP support for TI cpsw driver and base it on
> page_pool allocator. It was verified on af_xdp socket drop,
> af_xdp l2f, ebpf XDP_DROP, XDP_REDIRECT, XDP_PASS, XDP_TX.
> 
> It was verified with following configs enabled:
> CONFIG_JIT=y
> CONFIG_BPFILTER=y
> CONFIG_BPF_SYSCALL=y
> CONFIG_XDP_SOCKETS=y
> CONFIG_BPF_EVENTS=y
> CONFIG_HAVE_EBPF_JIT=y
> CONFIG_BPF_JIT=y
> CONFIG_CGROUP_BPF=y
> 
> Link on previous RFC:
> https://lkml.org/lkml/2019/4/17/861
> 
The recycling pattern has changed i'll have a closer look in the weekend and let
you know
> Also regular tests with iperf2 were done in order to verify impact on
> regular netstack performance, compared with base commit:
> https://pastebin.com/JSMT0iZ4
Do you have any XDP related numbers?
> 
> Based on net-next/master
> 
> Ivan Khoronzhuk (3):
>   net: ethernet: ti: davinci_cpdma: add dma mapped submit
>   net: ethernet: ti: davinci_cpdma: return handler status
>   net: ethernet: ti: cpsw: add XDP support
> 
>  drivers/net/ethernet/ti/Kconfig         |   1 +
>  drivers/net/ethernet/ti/cpsw.c          | 570 +++++++++++++++++++++---
>  drivers/net/ethernet/ti/cpsw_ethtool.c  |  55 ++-
>  drivers/net/ethernet/ti/cpsw_priv.h     |   9 +-
>  drivers/net/ethernet/ti/davinci_cpdma.c | 122 +++--
>  drivers/net/ethernet/ti/davinci_cpdma.h |   6 +-
>  drivers/net/ethernet/ti/davinci_emac.c  |  18 +-
>  7 files changed, 675 insertions(+), 106 deletions(-)
> 
> -- 
> 2.17.1
> 
Thanks
/Ilias